html, body {
    height: 100%;
}

input[type=checkbox] {
    margin-right: 3px;
}

.panel {
    position: relative;
    min-height: 100%;
    min-width: 600px;
    margin-bottom: 0;
}


.panel-heading, .panel-body {
    padding-right: 20%;
    padding-left: 20%;
}

.panel-footer {
    width: 100%;
    height: 55px;
    position: absolute;
    bottom: 0;
}

.btn-next {
    float: right;
}

/*按钮按下弹起*/
.btn:hover,
.btn:focus{
    outline: none;
}

.btn-body{
    margin-bottom: 60px;
}